First of all, what is your financial purpose?
Do you like investing?
if you have already that 1BTC, at what rate did you buy? DO you get the profits?
Do you know already the risks of investing in Bitcoin, other cryptos, and also stocks market?
What kind of investment do you really know and udnerstand?
I will suggest you invest in something that you really understand.
You can learn at first and you will know the best way to spend your BTC. If you want to cash out them, I will prefer to not cashing out all, but only a part and use them for offline business or investment.
But once more, do your own research and consideration wisely and smartly.